Preconstructed Advices

Hi, i am an ex modern player and i have sold my collection more or less 6 years ago, now a couple of friends want to buy a preconstructed commander deck to play for fun and then we will see if they want to invest more. Do you have any advices about good precons that can be upgraded around 50 euros? I was thinking about the jeskai one from ikoria based on cycling but i fear that it wont be viable for an upgrade. (the deck i really wanted was the mardu vampire but now it costs 200 euros :/)